<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
    #v1{
        width: 100px;
        height: 30px;
        background-color: green;
        color: red;
        text-align: center;
        line-height: 30px;
    }
        span{
            font-size: 25px;
            font-style: italic;
        }
        #h11{
            font-weight: normal;
            text-shadow: blue  -5px 5px  3px;
        }
        #h12{
            text-decoration: underline;
        }

    </style>
</head>
<body>
<div id="v1">div1</div>
<div>div2</div>
<span>苹果</span>
<span>香蕉</span>
<h1 id="h11">冰箱</h1>
<h1 id="h12">洗衣机</h1>
</body>
</html>